Lawson Type “ME” and “MF” fuse-links are for use in single or three-phase house service cut-outs or similar installations. The standardized BS 1361 breaking capacity of these fuse-links is 33kA at 0.3p.f. However, to cater for increased fault levels, all Fuse-links have been ASTA Certified to 80kA at 0.15pf.